Number of nonequivalent binary matrices with n distinct columns and any number of distinct nonzero rows with 3 ones in every column up to permutation of rows and columns.
A331716
Number of nonequivalent binary matrices with n distinct columns and any number of distinct nonzero rows with 3 ones in every column up to permutation of rows and columns.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =3a(4) =19a(5) =141a(6) =1571a(7) =21928
External references
- oeis: A331716